Gas diffusion layer modifications and treatments for improving the performance of proton exchange membrane fuel cells and electrolysers: A review

摘要: Abstract Gas diffusion layer (GDL) has a critical role in determining the performance of proton exchange membrane (PEM) fuel cells and electrolysers by facilitating uninterrupted smooth gas water transport to from electrochemically active areas these cells. The design GDLs been evolved significantly during recent years with key aim improving their for delivering role. This paper provides comprehensive review modifications introduced improve GDL date. majority have carried out on studied lesser extent. main focus was found be management reactant delivery improvement as per defined GDLs. covers detail linked hydrophobicity, porosity, engineered perforated effect introducing microporous (MPL) is also reviewed considering aspects such MPL thickness, pore size, hydrophobicity hydrophilicity, cracks structure. comes up research gaps that are yet addressed recommendation future researches followed (i.e. achieve further improved PEM electrolysers).